Answer:
numbers and lines what else do u what you didn't put a picture
B. The air you breathe.
Because the rest of the choices are not environmental factors. Gang activity, and access to jobs and education are not environmental because environment are things about the world.
The most efficient way to eliminate waste is obviously to reduce. If we reduce the intake there wont be as much outtake.
B. Red blood cells contain a protein that binds with oxygen.
